Farrier&#39;s knife.



No. s64,|75. iatented Dec. I8, I900. J. W. POLCHOW.

' FABRIER'S KNIFE.

(Application filed May 29, 1900.)

(No model.)

A TTOR/VE Y5 IN VENTOP Jo'7z7z fifFaZkau) N B Y I i ogw UNITED STATES PATENT FFICE.

JOHN W. POLCHOW, OF APPLE RIVER, ILLINOIS.

FARRIERS KNIFE.

SPECIFICATION forming part of Letters Patent No. 664,175, dated December 18, 1900.

Application filed May 29, 1900. Serial No. 18,376. (No model-l To all whom, it may concern:

Be it known that I, JOHN W. PoLoHow, residing at Apple River, in the county of Jo Daviess and State of Illinois, have invented certain new and useful Improvements in Farriers Knives, of which the following is a specificatiou.

Myinvention relates to that class of knives having detachable blades and handles provided with sockets into which the butt or tang end of the blade is inserted and having a spring-catch device on the handle for looking the blade in position.

My invention comprehends anew and novel construction of spring-catch having for its purpose to simplify the present forms of spring-catch devices which can be the more economically manufactured, easily manipulated, and which will effectively serve for its intended purposes.

The invention therefore consists in the details of construction and cooperative arrangement of parts, all of which will hereinafter be fully described, and specifically pointed out in the appended claims, reference being had to the accompanying drawings,in which Figure 1 is a perspective view of my improved farriers knife. Fig. 2 is a face view of the same, oneof the handle-sections bei'ng removed and its reverse side being shown. Fig. 3 is a longitudinal section of the same, taken on the line 3 3. Fig. 4 is a transverse section of the handle portion, taken practically on the line 4: 4 of Fig. 2, the two handlesections being together. Fig. 5 is a similar view on the line 5 5 of Fig. 2. Fig. 6 is a cross-section on the line 6 6 of Fig. 2. Fig. 7 is a detail view of the springcatch member.

Referring now to the accompanying drawings, in which like characters indicate like parts in all the views, 1 designates the handle portion of my improved knife, which preferably is of metal, but may be of any other desirable material. This handle is made of two sections havingthe same general shape, forming, as it were, mates, and each has a concaved portion a a on its inner face, whereby the handle when complete will have an internal chamber 1", for a purpose presently explained. The front end of each handle-section has a groove 1, the two grooves forming a socket for the reception of the tang end 2 of the blade, which in the drawings is shown as especially formed for horseshoeing purposes, and while my improvement is more especially intended for holding cutting-blades of this kind it is manifest that my special means, hereinafter described, for holding the blade to the handle may be used for any type of knife in which it is intended the blade when opened or extended remain in a fixed position and will be found particularly useful when applied to that type of knives used by one-handed persons.

Each handle member has a pair of apertures arranged in the same longitudinal plane, and the apertures 3 3 in one handlesection X are threaded, while the apertures 41 4 in the other handle-section Y are unthreaded and terminate in countersunk portions, as shown. I

The handle-section X has a hub portion 5 surrounding its aperture 3, its upper edge being flat and in a plane with the inner or bearing face, and the handle member Y has a similar hub portion 6, the two hub portions 5 and 6 forming, when the two sections Xand Y are fitted together, clamping-surfaces for holding the inner end of the spring catchplate 7, the peculiar construction of which and the manner in which it connects with and cooperates with the handle and the blade forming the essential feature of my invention. The spring catch-plate 7 consists of a single piece of flat thin but strong springsteel, the rear end of which is apertured, as at 7, its front end terminating in an upturned locking-lip 7", it also having an aperture 7 near such end, the two apertures 7 7 when the plate 7 is in an operative position registering with the apertures 3 3 4 4, as clearly shown in Fig. 3; The handlesection Y is also formed with an aperture 4 near its front aperture 4, and the spring-plate 7 has a finger-stud 7, that projects up through the said aperture 4". The tang of the blade has a series of apertures 8 8, with which the lip of the catch-plate 7 is adapted to engage, as shown. I

In the complete adjustment of the handle the inner end of the plate 7 is clamped between the hub portions of the two sections X and Y. This causes the said plate 7 to extend midway the hollow chamber and with its lip IOC ' of the plate 7, and thereby guides said end and keeps it from moving laterally.

To release the blade, it is only necessary to depress the finger-stud of the plate 7 sufficiently to cause the locking-lip of said plate to move out of engagement with the bladetang.

I am aware that handles with spring-catches therein for securing blades involving the same generic principle of my invention have heretofore been provided. I therefore make, broadly, no claim for such structure.

My invention diiferentiates, so far as I know, from the different types of fasteners of this kind heretofore provided in that my spring-catch is constituted of but a single member so constructed and adapted to be so combined with the handle-seetions that the same means that hold the two handle-sections together holds the spring-catch in a proper operative condition.

Having thus described my invention, what I claim, and desire to secure by Letters Patcut, is

1. A knife-blade having a tang formed with locking indentations, in combination with a handle formed of two like sections, the two sections being hollowed out on the inner face and having socket portions for the bladetang, each handle-section having an aperture and a surrounding hub, one of the apertures being threaded; a fiat spring catch-plate having a locking-lip at the front end, its rear end being apertured and adapted to seat between the hubs of the handle-section, and a screw passing through the hub-apertures of the handle-sections and the aperture in the spring-plate, all being arranged substantially as shown and described.

2. The combination with a blade, the tang of which is provided with an opening, of a two-part handle having an internal space into which the tang end is adapted to enter, a spring catch-plate having a locking-lip at one end adapted to engage the tangaperture, the handle sections having hub portions adapted to clamp the other end of the spring catch-plate and hold it rigid, and means for securing the two handle-sections together as specified.

3. In a knife of the character described, the combination with a two-part handle and a pair of clamp-screws passing transversely therethrough and adapted to hold the two sections together, one of said screws being at the rear and one at the front of the handle, the two handle-sections being concaved internally to produce a space or chamber, and having hub portions surrounding the rearmostscrew-apertures, one of the handle members havingasupplemental aperture, aspring catch-plate having an aperture at its rear end, whereby the end is adapted to seat between and be clamped by the hub portions of the handle members, the free end of said catch-plate having a lip to engage the tang of the blade and having a stud to project through the supplemental aperture in the handle, and the blade having an apertured tang slidable into'the socket or chambered portion of the handle, as set forth.

JOHN \V. POLOHOW.

Witnesses:

JOHN F. STADT, A. F. TEMPERLE. 

